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Simpson Strong Drive® Exterior Wood Screws

Simpson Strong-Tie

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The SDWH Timber-Hex HDG screw is a 0.276"-diameter hot-dip galvanized screw suitable for marine and coastal applications. The SDWH Timber-Hex HDG screw has a SawTooth® point and oversized integral washer that makes for fast installations; no predrilling or separate washer needed. Speed up your next pile job by replacing 3/4" and 5/8" HDG bolt/washer/nut assemblies (two screws for one bolt in many conditions) with the Strong-Drive SDWH Timber-Hex HDG screw. It is code listed under IAPMO-UES ER-192 and meets 2015 and 2018 IRC® and IBC® code requirements for several common wood framing applications.

Key Features

0.276" shank diameter for heavy-duty structural applications
ASTM A153 Class-C hot-dip galvanized coating suitable for coastal and marine environments
SawTooth point design for fast starts and no predrilling
Oversized 0.93"-diameter integral washer eliminates the need for a separate washer
3/8" hex drive for secure driving (replacement driver bit — BITHEXR38-134)
US Patent 9,523,383